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Finding the Third Proportional to 79,211,544 and 121,172,198

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Solution

The third proportional to 79,211,544 and 121,172,198 is: 185,360,628.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,211,544 : 121,172,198 = 121,172,198 : x
  2. Step 2: Convert to fraction form
    79,211,544/121,172,198 = 121,172,198/x
  3. Step 3: Cross multiply
    79,211,544x = 121,172,198 × 121,172,198
  4. Step 4: Simplify right side
    79,211,544x = 14,682,701,568,151,204
  5. Step 5: Solve for x
    x = 14,682,701,568,151,204/79,211,544
  6. Step 6: Final answer
    x = 185,360,628.35

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.